Reversing gear



Patented dan. 1223.,

HENRY', 0F IRIDGEWOOD HEIGHTS, NETYOLRIK.I

. nnvnnsiue enea.

Apfplgation filed May-21,1919. Seriali-10.298,662.

Queens, State of'llilew` York, have inventedL certain new and useful Improvements in Re versing,(Jreai's,4 ofiwhich the followingV is` a specificati()n.l

My invention relates-.t0r reversing gears and hasfior` its obj-cotto -providea simple and Vetlicient construction, including a sirn-` pliiied universal joint andan ellicient clutch arrangement. Other more .I i specilic objects of my invention will appearfrom `the descriptionhereinafter' and" the features of novelty Will be-pointed out in the appended claims.y

Inl the yaccompanying drawings, which for illustrative and, descriptive *purposes show an example oiimyinvention, Fig.` 1 is a plan vienr partly inlsection; Fig. 2 is a longitudinal section on the linel2-u2 of Fig. 1; lig. 23 is an end view; Fig. l is a crosssectionmon` the linefl-ll otFig. 2; Fig. 5 is a similar vievv on Vthe linell-v-lof Fig. 2; Figv 6 is ,another similaijvievv on theiline 6-6 of Fig. 2; and Figs-7 to 13 inclusive arey detail views illustrating the `universal joint.

As shown in ithe illustrated example my invention'xcoinprises end members 10 and 11 spacedoapart iny axial Aalignment and pro-` vided `with axially registeringbearings 12 anelli) which project in opposite directions respectively from said members 10 `and 11 as shownin F l Unltheiropposed inner :faces theme-Inbers 10 and 11are lprovided with shouldered lugs 14 to which suitably shaped plates 15 are-connected for instance by ineansoi bolts 16said plates serving to rigidly conneetsaid members. 10 and 11 together andto maintain thern rin the intended spaced relation as shown inflfig. 1,` BearingA blocks 1T and 18 are locateflv betweeny this platese 1,5 andare secu-red Athereto in `any convenient "manner yas by means ordowely nins19 gfgears 2O and arelocated between theblocks 17 andl 153 in `inesh- With-each othenandpare formed Withtrunnions `22and l 23` which. in effecta constitute auxiliary shafts 4vand `arejournalled in theblocks 17 and 18 as shown in Fig.v 2. In addition universal'sockets 2&and25 are carried respec.n tvelyby the trunaons anlf, .the Socket 2e'lbeihg, located {,adiacentyto the outer. lace being contiguous to the outer `lace of the bearing" block 18. As' shown in Fig. 2 the bearing blocks 17 and 18 are mounted between the plates y15 so as to incline the axes 60 of the gears 2O and 21 and theirtrunnions 22 and123 with respect to thecoininon axis Y of thebearings 12 and 13, the angles of inclination being such as to bring the centre of the universal sockets 24 and 25 into reg 65 istry With said common axis. A driving shaft 2l' is journalledin the bearing 12 Vand l is connected ivith'oa source or power; such las, an engine or motor in any conventional andE Wellknoivn Way, for instanceas Will be here- A l 929.1lorined with an open recess 30 extending-- diametrically therethrough as shovvn- 1n` Figs.r 'l' and 8 and litting over the inter niediatey iiattenedportion 31,01e a pin 32 80 which liaslits relatively enlarged and LcirfV cular ends 33 located in diametricallyoppd site openings ink the sockets y2li and 25.1 lll/lith. this arrangement the. shouldersl formed on the `pins 32 engagethe Aperiph;y 85 eries of theheads 29 and are'thereby heldin place in the sockets 24 and 25; at the same time the pins 32 in turn couple thelieads 29 tothe sockets 24C and 25 to complete the universal joints. li. for any reason it should be vdeemed.necessary or advisable, a `member,

35 having duplicate heads` 29a` and129l as shown `in Figs. 9., 11 and 13 and correspond-p ing'ulto theheadsk 29niay be used to `connect either orV both oi the shafts 27 and 28 95 with the respective gears V2O. and 21; in suchV caseA theQshaft carries a Vsocket `24a similar to the sockets 24 andV 25 into which one of the heads 29a or 29h is fitted, the otherhead being located Withinvthe socket 211; 'or 25 as 100 above e described*` It will bek understood,v `when thev member is used` that the .confv struction. operation and y ,connectionY of l thek duplicate head With the duplicate socket isI the sannemaslset forthabove.l lnsoinecases it lmay bendeeined advisa le or necessary to provide a pin 29? which yextends `trans- 2 versely through the heads `29, 29? or 29b and throughuthe pins 2V and whereby `the latterl and n the heads are positivelyv secured- Vto-v. esther against Sen a.11frt a...in4 ...an die; l'

In the vpreferred construction a shell 36 extends over the end member 11 and plates l5 to form a housing for theV gearing and arranged to contain grease or other lubricant whereby the parts are properly lubricated in the well-known way. The shell 36 may be secured in position in any Ysuitable manner and preferably so as to 'be readily detachable; for instance, said shell `may be provided with an inwardly'extending ,an-v

`with a source of power. The coupling 41, asl

shown, is provided with a preferably integral drum 43 which extends toward the end member 10 andsurrounds the bearing 12 at ,a distance as shown in Fig. 2; if desired an endthrust washer 44 of libre or other suitable substance may be locatedjbetween the end of the bearing'12 and the coupling 41. The drum 43 is formed with an annular liange 45`whi`ch is located in the recessed end 4G lof an annular sleeve 47 projecting from and preferably comprising an integral part of the end member 10.as shown in Fig. 2; the drum 43 vis further provided with a pair of outwardly open recesses 48 and 49 preferably locatedat diametrically opposite points for the purposel to be more fully described hereinafter. A pair of split rings or clutch bands 50 and 51 surround the drum 43-and are located side by side between the flange 45 andthe endmember 10, it being understood that said rings are inwardly resilient `and normally clamped about said housing out of Contact with the sleeve47 and having no engagement with the end member 10. The bands 5,0 and 51 are so'located with respect to each other as to bring'the splits thereofout of registry with each other and into registry respectively with thel recesses 48` and v49. As shown in Figs. 4 and 5 the ends of therings 50 `and 51 are in co-opera- :tive relation to cams 52 and 53 formed respectively on members 54 and55 rotatably mounted in the recessesy 48 and 49, said cams 52 and 53 being formed so as to be capable of expanding said rings and of permitting them to resiliently contract back to normal positions. It will be understood that the member 54 is cut out or shaped so as not to interfere with thevband 51` and that the niember 55 iis 'constructed so as not to'interfere with 'theband 50; furthermore the members 54 and 55 are formed withinclined surfaces 54a`and 55a respectively asshown in Fkigs.` 4 and 5, said surfaces being located .in reg? istry with the bands 50 and 51 andserving to permit the "necessary degrees of rotation of said members 54 and 55 in the use of the 'clutch device. As shown in the illustrated example, the member 54 is maintained against axial movement in the recess 48 by means of a screw 56 which passes through the fiange 45 into a circumferentially extending recess 57 formed in the member 54; the member 55 is held against 4axial displacement in the recess 49 by the band 50 asv shown in Fig. 2. l j

At their outer ends the 'members'50 and 51 carry'arms 58 which lie along the outer' surface of the flange 45 and are provided at their free ends with hemispherical "or otherwise rounded studs 59secured` invplacc for instance by nuts 6G and normallybearing upon the periphery of the coupling41.' Coil springs 61 having one end secured to plates62 clamped upon the arms 58 by the nuts and theother end fastened to suitable studs 63 projecting outwardly from the ange45, serve to maintain saidstuds 59 in engagement with said coupling 41 and to return them thereto.` A collar 64 isr slidably `mounted upon the coupling 41 and is provided at its inner end with a taper or bevel Y,

65 located in operative relation to the studs 59 as lshown in Fig. 2; the collar 64 may be provided with 'an annular groove tiefer the accommodation of the forked end of an operi ating lever 66L1 of customary construction l whereby said collar may be moved lengthwise of said coupling 41 in an axial direction in the well-knownway. It will, of course, `be unj Vderstood that any other convenient arrange-V Y ment maybe utilized for shifting said collar relatively tothe coupling 41. yThe arrangement -further includes thev clamping vdevice 47a Awhich 'may be of any suitable type, for instance, as shown in United States PatentNo. 714,197 of November 25, 1902. and which includes a collar 47b 4surrounding the sleeve 47 The clamping device is operatively connected with the lever -66a -by a link 66h, in the usual way.

In the A'normal condition of the mechanism when power isapplied to rotate the driving shaft .27, lthe universal joint 24-29` `will cause the rgear 2O to be rotated and in turn to rotate the gear 21` in the opposite direction; the rotary motion of the latter is transmitted to the driven shaft 28 through the mediumof the universal joint S25-29.. with the result that the direction of rota'- tion of the driven shaft 28 is Vopposite to that of the drivingshaft 27, The latter, fi

during rotation., carries with it the coupling 41, drum43, arms 58 andtheirconnected parts and the bands 5() and 51 whichrevolve in'close proximity tobut out of Vcontact with the inner .surface of the sleeve 47 which, under these conditions, remains stationary, and is positively held against CIK rotation by the clamping device 473--47b which is properly actuated coincidentally with the operation of the lever 66a in the usual way. The rotation of the parts described is also relatively to the colla-r 64 and is guided and steadied by means of the flange in (1o-operation with the recessed end 46 of the sleeve 47. v

lf the collar 64 is now moved lengthwise of the coupling 41 toward the iange 45, the bevelled end 65 thereof will force itself beneath the studs 59 and will cause the same to ride up on the collar 64. As the studs 59 are thus moved outwardly the'arms 58 will be similarly actuated against the tension of the springs 6l and will cause a rotation of the members 54 and 55 about their axes in the recesses 48 and 49, as is apparent from the illustrations in Figs. 4 and 5; these movements of said members 54 and 55 are in directions to cause the cams 52 and 53 to exert a force on the ends of the bands and 5l whereby said bands are spread outwardly and thus brought into engagement with the inner surface of the sleeve 47. ln this manner the latter and with itthe gears 2O and 21 and driven shaft 28, through the medium of the plates l5, are coupled to the driving shaft so as to partake of the rotative motions thereof; the result of this is that the driven shaft 28 is no-w rotated in the same direction as the driving shaft 27 or in other words in a direction reverse to that in which it was driven prior to the described actuation of the collar 64. lt will be understood that the clamping device 47a-47J'is released, coincidentally with the operation of the lever 66, to permit the described rotation of the sleeve 47 and its connected parts. An operation of the collar 64 in the reverse direction causes the parts to resume their normal positions in which the driven shaft 28 revolves in the opposite direction to that of the driving shaft 27.

My improved. reversing gear is very simple in construction and efficient in operation and includes the described improved universal joints whereby power is readily and easily transmitted from one shaft to the other with a minimum of friction and with a. maximum of efficiency. While my im- 'proved universal joint is particularly adapted for use in my improved reversing gear it is obvious that said joint may be used with equally good results in other ways.

The improved clutch included in my gear whereby the two shafts are directly coupled together is of maximum efficiency and simplicity; by locating the bands 50 and 51 with the splits at dialnetrically opposite points the spread of the two bands is such as to preserve the true circular formation of the actual surface which engages the sleeve 47 to couple the parts together. lt will, of course, be understod that ifdesired or found advisable the bands may be arj ranged otherwise than as shown.

Various changes in the specific form shown and described may be made within the scopel of the claims without departing from the spirit of my invention.

l claim:

l. A reversing gear comprising opposed end members spaced from each other in axial alignment, a driving shaft journalled on one of said members, a driven shaft journalled on the other member, a pair of parallel, auxiliary shafts located between said driving and driven shafts and inclined relatively thereto, gears carried by said auxiliary shafts in mesh with each other, bearing blocks for said auxiliary shafts carried by said members, universal joints whereby said auxiliary shafts are connected respectively with said driving and driven shafts to normally rotate the latter in opposite directions, a sleeve carried by one of said end members and clutch mechanism carried by the driving shaft and co-o ierating with said sleeve to couple said sha 'ts together to r0- tate in the same direction.

2.44 reversing gear comprising opposed end members spaced from each other `in axial alignment, a main driving shaft journalled on one of said members, a main driven shaft j ournalled on the other member j i in axial alignment with said driving shaft, spaced, parallel plates extending between and connected with said end members, bearing blocks mounted between said plates, parallel, auxiliary shafts journalled in said bearing blocks, a pair of gears carried by said auxiliary shafts in mesh with each other, the axes of said bearing blocks, auxiliary shafts and gears being inclined relatively to the common axis of said driving and driven shafts, universal joints whereby each of said auxiliary shafts is connected with one of said main shafts to normally rotate the latter in opposite directions, a sleeve carried by one of said end members.,v a drum carried by said driving shaft and extending within said sleeve. an inwardly resilient clutch-band surrounding said drum i and means. for expanding said band into en gagement with said sleeve whereby said two main shafts are coupled together to rot-ate in the same direction.

In testimony whereof l have hereunto set my hand.

encens w. univer.

'roo 

